Things I Hate:

The Junction System
Squall
Lack of characterisation for party members in VII and VIII
No characterisation for party members in FF and FFIII
The easiness of FFX-2
No world map in FFX
The fact I haven't played enough FFVI
Rosa
Cheese
Any FF game that leaves out the moogles
FFVII's graphics
FFVIII's graphics
Eiko
FFIX's crappy black magic
Ozma
Fanboys/girls
Differential Equations
People making mad theories about FFVIII
Bartz's aftershave
Seymour's girly voice
The Al Bhed Psyches' goalie's insane catching stat
Emo